Q2. It is desired to bring about a change in the state of a system by performing work on the system under adiabatic conditions.
(a) The amount of work needed is path dependent
(b) Work alone cannot bring about such a change of state
(c) The amount of work needed is independent of path
(d) More information is needed to conclude anything about the path dependence or otherwise of the work needed

Q3. ‘’Heat cannot be transported from a system at low temperature to another system at high temperature without the aid of external agency’’. This statement of second law is attributed to
(a) Clausius
(b) Joule Thomson
(c) Max Planck
(d) Gay-Lussac

Q4. In statistical thermodynamics, entropy is defined as
1.measure of irreversibility of a system
2.a universal property
3.degree of randomness
4.thermodynamic probability of disorderness
Which of the above is/are correct?
(a) 1 and 3
(b) 1, 2 and 3
(c) 2, 3 and 4
(d) 1, 3 and 4

Q5. Availability of a system at any given state is
(a) a property of a system
(b) the total energy of the system
(c) the maximum work obtainable as system goes to dead state
(d) the maximum useful work obtainable as the system goes to dead state